using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Plese Enter String");

        string _inputString=Console.ReadLine();

        string _tempOp2="";

        string _tempOp="NO";

        Console.WriteLine("Plese Enter Sub-String");

        string _subString=Console.ReadLine();

        if(_inputString.Contains(_subString))

        {

            _tempOp="YES";

            if(_tempOp2=="")

            {

                _tempOp2=_inputString.IndexOf(_subString).ToString();

            }

            else

            {

                _tempOp2=","+(1+_inputString.IndexOf(_subString)).ToString();

            }   

            StringBuilder sb = new StringBuilder(somestring);

sb.Remove(2, 3);

somestring = sb.ToString();

​

Di

        }

        Console.WriteLine("{0},{1}", _inputString, _subString);

        Console.Read();

    }

}